Multi-Axis Electric Stepper Motor

Multi-axis stepper motors offer a compact solution to actuate multiple degrees of freedom in mechanical system by single device. This research presents an electric motor with three coaxial shafts driven stator. The dimensions are 42 × 44 mm$^3$ (excluding output shafts), its mass is 0.326 kg and it includes rotors height 7 mm different number teeth. maximum torque for one rotor at low speed 1 A current 0.10 N m, which comparable that conventional similar size. When simultaneously, then the total power has be distributed over rotors, resulting 42% lower on average. no-load 4000 revolutions per minute. shaft configuration poses significant challenges but also unique opportunities actuating joints robotic system. In many applications, design can redesigned make effective use multi-motor design. An example three-DOF robot arm demonstrated efficiently proposed motor.